TE在电源管理系统的保护解决方案.ppt

TE在电源管理系统的保护解决方案,Shanghai Application TeamShanghai Circuit Protection Components Test LaboratorySep. 2011,2019年10月23日星期三,page 2 /,议程,TE 电路保护及新产品简介PPTC在电源管理系统中的过流保护方案 气体放电管在电源管理系统中的防浪涌保护方案 AC2 Pro在电源管理系统中的综合保护方案 PolyZen在电源管理系统中的综合保护方案 2410SFV保险丝在电源管理系统中的保护方案,2019年10月23日星期三,TE 电路保护及新产品简介,TE 优势电路保护产品,Overcurrent CircuitProtection,Overvoltage CircuitProtection,HybridProtection,PolySwitch Resettable Devices,Surface-mount Chip Fuses,2Pro Devices,PolyZen Devices,PESDProtection Devices,Gas Discharge Tubes,Silicon ESDProtection Devices,OvertemperatureProtection,RTP Devices,Telecom Fuses,MHP Devices,Bimetal TP,1980年，业界首家创新式地成功使用聚合物正温度系数材料（PPTC）作为可恢复过流保护器件于电子电路中。帮助许许多多电子设备制造厂商，使其设备更加安全、可靠。致力于创新标准的应用，广泛地提供客户定制型电路保护解决方案。过流保护PolySwitch 自恢复保护器件表面贴式保险丝过压保护ESD 保护器件陶瓷气体放电管综合保护2Pro 器件PolyZen 器件,TE电路保护市场30年,2019年10月23日星期三,PPTC在电源管理系统中的过流保护方案,PPTC技术及PolySwitch元件,PPTCPPTC (Polymer Positive Temperature Coefficient 高分子正温度系数)PPTC元件 (高分子正温度系数热敏元件) PolySwitch元件一种高品质的PPTC元件过流/过热保护元件可多次使用,PPTC技术,PolySwitch典型工作电路,正 常 状 态 I=V/RL,RL,动 作 状 态 I=V/RS,Log RS,T,RS,电 源,RL,PPTC技术,用途及用法过流保护(短路保护，过载保护)；与被保护部分串联过热保护；与易过热器件热连接优势内阻小且稳定性好纯电阻(10MHz以下)动作速度快表面温度低,LED lighting driver over current protection,LED lighting driver will use AC/DC, DC/DC Power SuppliesNeed the PPTC to protect in the power supply side for fault: short circuit protection, over current protection,Design case : LED Lighting,Part Numbers: LVR016Functional Area: LED short protectionLEDs can fail short caused by improper connection. Protection Type: over current protectionWorking conditions: 240VAC, 80mA(60°C)A LED rating is 3V. The LEDs will be connected 48pcs in series. It means DC144V, Fault conditions: voltage, 240VAC, 3A(60°C),LVR016,2019年10月23日星期三,气体放电管在电源管理系统中的防浪涌保护方案,GDT气体放电管系列GDT for lightning protection,Ceramic GDTs2 and 3 Pole DevicesLead Types: No Lead, Radial Lead, Axial lead, T LeadDiameter Sizes:6mm, 7.5mm, 8mmDC Sparkover Voltage Values:90V -> 3200V8x20µs Surge Current Rating (10 times) : 5kA, 10kA, 20kAFail-short Device AvailableAvailable on top and bottom of devicePackagingTrays (Bulk special request),LED照明系统的保护需求,过电压&过电流故障来源:雷电: 直击雷蕴含极大的能量 (峰值电压可达5000kv):雷电击中线路或因电磁感应产生的极高电压，由室外电源线路和通信线路传至室内的电气设备。云层之间频繁放电产生强大的电磁波导致共模和差模干扰，影响电气设备运行。供电系统中的电感性和电容性负载开启或断开、地极短路、电源线路短路等，都能在电源线路上产生高压或高流脉冲 (可达正常电压的3到5倍). 静电供电系统不稳定系统过热故障来源:散热系统不足或失败外部环境温度过高,雷击保护要求- IEC61000-4-5（GB/T 17626.5）,GDTs & MOVs Can Protect AC Power-lines Against Voltage Spikes,Input waveform with GDT+MOVs,Input waveform w/o GDT+MOVs,Vpeak,Vclamping,In case the AC line current would be greater than the GDT follow-on current, the MOV avoids any latch of the GDT, and protects it from overheating.,LED照明系统电路的板级雷击浪涌保护 IEC61000-4-5 lightning compliance,应用: 室外照明浪涌防护 职能范围: 交流输入电源的雷击浪涌保护 保护方式: 电源电压: 230VAC 故障条件: 雷击浪涌差模 2KV 1.2/50(8/20)， 共模4KV 1.2/50(8/20)雷击浪涌保护,Application: DC power supply protection up to 72VdcAC power supply protection up to 144VacFEATURES: Directly used on AC and DC power, no MOV needFast response timeHigh current rating, space savingStable performance over lifeVery low capacitanceHigh insulation resistanceExcellent SMD handling,Stacked GDT for AC/DC power supply Protection,Equivalent circuit,Application for stacked GDT,Key application requirements: Strict height and PCB space limitation for application High exposure lightning strikes requirements up to 20KA High reliability requirement, like telecom, railway equipmentAdvantage: Compact dimension of stack GDT (h < 10mm) Inductor used for coordination, 2-6uH Higher surge current handling up to 20KA Height reduced by more than 50% and PCB footprint is reduced by more than 70%, compared with MOV in parallel solution Compared to MOV solution, no unbalanced current Long lifetime leakage current concerns solved,TE New solution with stack GDT,Existing solution with MOV,2019年10月23日星期三,AC2 Pro在电源管理系统中的综合保护方案,LED电源电路的综合保护-交流 2Pro,For more information visit:www.circuitprotection.com/2Pro,LED电源电路的可恢复保护方案 集成的过流/过压保护方案 该保护元件采用热耦合PPTC与MOV技术实现MOV的过热保护 额定工作电流范围从150mA 到 2A (可以根据客户要求提供其他电流产品) 工作电压范围从260V 到 510V (可以根据客户要求提供其他电压产品) 帮助实现LED电源电路的保护 产品机构认证:产品中分立元件分别通过UL认证 符合RoHS标准,交流 2Pro 元件,AC LED的过流以及过流过压综合保护无驱动器,过压防护：雷击浪涌、开关瞬变、(电压波动),过压防护：雷击浪涌、开关瞬变、(电压波动),/,2019年10月,22,Over current protection,Over voltage protection,TE AC 2Pro principle,TE AC 2 Pro Loss of neutral protection,Street cabinet Transformer:,230Vac/400Vac,230Vac,400Vac,Phase 1,Phase 2,Phase 3,Neutral,400Vac,TE AC 2 Pro Loss of neutral protection,Street cabinet Transformer:,230Vac/400Vac,230Vac,400Vac,Phase 1,Phase 2,Phase 3,Neutral,400Vac,Z3 >> Z2,400Vac,TE AC 2 Pro Loss of neutral protection,Loss of neutral abnormalStandard unprotected MOVS are typically rated to 275Vac RMS for a universal input voltage rangeThe worst case would be a voltage of 400V instead of 230V derived from loss of neutralIn a loss of neutral condition they may overheat with disastrous even if a fuse or power resistor is used in upstreamThe 2Pro devices PPTC element helps prevent thermal runaway, maintaining varistor surface temperature at less than 150 degree,TE AC 2Pro Lead Spacing,Considering that PPTC is located in the primary side for LVM2P, a minimum distance between leads of 5.08 mm is required to meet the safety clearance.,LVM2P: E = 5.08 mm,TE AC 2Pro Summary,Meet IEC61000-4-5 Lightning based on IEC61000-4-5Wave shape: 1.2/50s open circuit, 8/20s short circuit2kVoc, 2 source impedanceNumber of Hits: 10 (+/-5 Hits)UL 1449Meet abnormal voltage testsloss of neutral testMeet UL1434 requirement for PPTCConclusion: TE AC 2Pro have unique over current, over temperature, over voltage protection characteristic,Design case: TE AC 2Pro for LED lighting,TE AC 2Pro help customer to pass OC/OV protection and surge testing,AC LED OC/OV hybrid protection W/O driver,Surge protectionOver current prot.,2019年10月23日星期三,PolyZen在电源管理系统中的综合保护方案,PolyZen:聚合物保护的齐纳二极管集成热保护，短路保护的高精度齐纳二极管,I,FLT,VIN,I,OUT,I,PTC, I,HOLD,VOUT,GND,Polymer PTC,Zener Diode,PolyZen Schematic,Polyzen特点过压过流综合保护精准电压钳位 （+/-2%精度 齐纳二极管）封装尺寸小，功率大 独立器件，无需外围电路,LS 系列,CE 系列(New)薄型设计1mm高度,Polyzen 工作原理,2019年10月23日星期三,page 32 /,PolyZen: 聚合物保护的齐纳二极管,未受保护的齐纳二极管只能承受1-2W的功率，否则当二极管的结温超过300oC，二极管就会被损坏经过热耦合，PTC能够在二极管的结温到达最高失效温度前去保护二极管，这样能大大提高二极管承受的功率快速动作的PTC能够在过流情况下有效地保护二极管及下游电路,Polyzen 应用场合端口电源保护的理想选择,应用场合车载自动导航系统 （PND）车载移动互联网设备 （MID）机顶盒/高清播放器 （STB）学习机工业手持POS机移动硬盘其他车载设备 多媒体播放器平板电脑手机,1.,3.,5.,7.,9.,USB2.0/3.0 端口电源保护,Polyzen 优势,替代现有过压过流分立器件保护方案 （TVS, fuse）替代复杂高成本的IC保护方案无需为防止电源误接而设计特殊连接器独立器件，无需外围电路有效减少故障率,传统DC端口保护,Polyzen 方案,Custom DC Connectors,Fuse,TVS Diode,LDO, or other Voltage Control Devices,Rest of Electronics,Standard Connector(Low Cost),PolyZen Device,Rest of Electronics,各种保护方案价格，能力分析-分立器件,各种保护方案价格，能力分析-组合方案,PolyZen 特性测试适配器（24V,120W)热插拔保护,吸收瞬态噪音钳位电压,Polyzen 与其他半导体集成型保护器件相比的优势？,外围器件：,Polyzen,IC 方案,独立器件，无外围电路,需要额外的外围电路,引脚：,三端器件，使用方便,更多引脚，组建电路,方案成本：,较低,较高,ESD：,APPLICATIONS Cell phone charger port and USB power Bluetooth headset Portable Media Players Education machineBenefit & Features Small size design, 1210 package (3.2*2.5*1.2mm) Stable Zener diode helps shield downstream electronics from over-voltage and reverse bias events Better over-voltage impulse withstanding than IC Single component placement with integrated OV, OC, and reverse bias protection solution Low voltage drop across PTC low input resistance Minimal power dissipation,Solution for Small Device PolyZen MINI,Industry Leading Protection againstVoltage TransientsInductive Voltage Spikes Wrong Power SuppliesReverse Bias,2019年10月23日星期三,2410SFV保险丝在电源管理系统中的保护方案,TE 2410 fuse type,LED lighting lightning surge standard,雷击浪涌测试（surge test），是依据IEC61547-2009,一般在220Vac电压的国家有要求标准要求是差模：500V，共模：1kV,LED lighting lightning surge test requirement,TE 2410 fuse vs 方形陶瓷管fuse焊接作业时,方形陶瓷管贴片保险丝，在高温的SMT焊接作业时，而能会因高温造成内部焊锡融化的情况，再加上外部熔融焊锡在凝固时产生的内聚力，而造成金属帽脱落的风险,